Your browser doesn't support javascript.
loading
Influence of age of aggregates and prokaryotic abundance on glucose and leucine uptake by heterotrophic marine prokaryotes
Azúa, Iñigo; Unanue, Marian; Ayo, Begoña; Artolozaga, Itxaso; Iriberri, Juan.
Affiliation
  • Azúa, Iñigo; University of the Basque Country. Faculty of Science and Technology. Department of Immunology, Microbiology and Parasitology. Bilbao. Spain
  • Unanue, Marian; University of the Basque Country. Faculty of Science and Technology. Department of Immunology, Microbiology and Parasitology. Bilbao. Spain
  • Ayo, Begoña; University of the Basque Country. Faculty of Science and Technology. Department of Immunology, Microbiology and Parasitology. Bilbao. Spain
  • Artolozaga, Itxaso; University of the Basque Country. Faculty of Science and Technology. Department of Immunology, Microbiology and Parasitology. Bilbao. Spain
  • Iriberri, Juan; University of the Basque Country. Faculty of Science and Technology. Department of Immunology, Microbiology and Parasitology. Bilbao. Spain
Int. microbiol ; 10(1): 13-18, mar. 2007. ilus, tab
Article in En | IBECS | ID: ibc-054983
Responsible library: ES1.1
Localization: ES1.1 - BNCS
ABSTRACT
The kinetics of glucose and leucine uptake in attached and free-living prokaryotes in two types of microcosms with different nutrient qualities were compared. Microcosm type M1, derived from unaltered seawater, and microcosm type M2, from phytoplankton cultures, clearly expressed different kinetic parameters (Vmax/cell and K’ m). In aggregates with low cell densities (M1 microcosm), the attached prokaryotes benefited from attachment as reflected in the higher potential uptake rates, while in aggregates with high cell densities (M2 microcosm) differences in the potential uptake rates of attached and free-living prokaryotes were not evident. The aging process and the chemical changes in aggregates of M2 microcosms were followed for 15-20 days. The results showed that as the aggregates aged and prokaryotic abundance increased, attached prokaryotes decreased their potential uptake rate and their K’ m for substrate. This suggests an adaptive response by attached prokaryotes when aggregates undergo quantitative and qualitative impoverishment (AU)
RESUMEN
No disponible
Subject(s)
Search on Google
Add to My VHL
Print
XML
Collection: 06-national / ES Database: IBECS Main subject: Prokaryotic Cells / Marine Fauna Type of study: Qualitative_research Language: En Journal: Int. microbiol Year: 2007 Document type: Article
Search on Google
Add to My VHL
Print
XML
Collection: 06-national / ES Database: IBECS Main subject: Prokaryotic Cells / Marine Fauna Type of study: Qualitative_research Language: En Journal: Int. microbiol Year: 2007 Document type: Article